a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
noun
(computer science) software that controls the execution of computer programs and may provide various services
noun
the left eye
noun
rigid connective tissue that makes up the skeleton of vertebrates
noun
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust
noun
the 15th letter of the Roman alphabet
noun
the blood group whose red cells carry neither the A nor B antigens
“people with type O blood are universal donors”
Word Forms
bony
adjective
composed of or containing bone
boney
adjective
having bones especially many or prominent bones
bonelet
noun
a small bone; especially one in the middle ear
oxygenate
verb
impregnate, combine, or supply with oxygen
oxygenize
verb
dehydrogenate with oxygen
Around the World
Europe
🇫🇷French
système d'exploitation
une bouche ou une ouverture semblable à une bouche
🇪🇸Spanish
sistema operativo
una boca o una abertura parecida a una boca
🇵🇹Portuguese
sistema operacional
uma boca ou abertura semelhante a uma boca
🇷🇺Russian
ОС
рот или ротообразное отверстие
India
🇮🇳Hindi
ओएस
मुँह या मुँह जैसा खुला भाग
🇮🇳Gujarati
ઓએસ
મોં અથવા મોં જેવું ખોલવું
East & Southeast Asia
🇨🇳Chinese
操作系统
嘴或类似嘴的开口
🇰🇷Korean
운영 체제
입 또는 입 모양의 개구부
🇻🇳Vietnamese
hệ điều hành
một cái miệng hoặc một lỗ mở giống như miệng
🇹🇭Thai
ระบบปฏิบัติการ
ปากหรือการเปิดเหมือนปาก
Middle East
🇸🇦Arabic
نظام التشغيل
فتح الفم أو الفم
🇮🇷Persian
سیستم عامل
یک دهان یا دهان مانند
🇹🇷Turkish
işletim sistemi
ağız veya ağza benzer bir açıklık
Test Yourself1 / 3
What is the primary definition of the word 'os'?
The primary meaning of 'os' is 'a mouth or mouthlike opening'.
Which of the following sentences uses the word 'os' in a grammatically correct way?
Using 'os' in a noun/adjective form makes the first sentence correct.
In which domain is the word 'os' most likely to appear as standard vocabulary?
'os' is a standard word used primarily in general literature and formal communications.
Community Poll1 / 6
How often do you encounter the word 'os' in your daily reading?
Very Often
Occasionally
Rarely
Never
Do you find 'os' easy to spell?
Yes, very easy
Somewhat easy
A bit confusing
Extremely hard
In your opinion, does the word 'os' have a positive, neutral, or gloomy tone?
Positive
Neutral
Gloomy
Vibrant
Which age group is most likely to use 'os' in regular conversations?
Kids (3-12)
Teens (13-19)
Adults (20-60)
Seniors (60+)
How likely are you to use 'os' in a professional email?
Very likely
Somewhat likely
Not very likely
Never
Would you classify 'os' as formal, casual, or slang?
Formal
Casual
Slang
Archaic
Pick an option to see how others voted
This word is also in the Advanced book — want the full, immersive treatment (age meanings, culture, creative use, deeper Hindi & exercises)?
Open the Advanced entry →
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